pointing accuracy 中文意思是什麼
pointing accuracy
解釋
瞄準精度-
Their maximum and variance of beam pointing accuracy are much smaller than the results of round - off method. deficiently, only ordinary antennas are studied here, circular array and cylindrical array, for example. farther study about complex and anomalous conformal antennas is expected
不過，本文中只對簡單形式的共形陣天線，如圓形陣、圓柱面陣天線進行了分析，復雜的不規則的共形陣天線的情況還有待于進行進一步的研究。 -
Then, the capacities of round - off method, two probable value method ( tpvm ), shift and compensate phase feeding method ( scpfm ) and shift compare and compensate phase feeding method ( sccpfm ), are compared in improving the accuracy of beam pointing
接著，通過模擬實例比較了舍尾法、二可能值法、遞推補償饋相法、遞推比較補償饋相法等幾種提高波束指向精度方法的優劣。 -
The key for phased array antennas with good functions is the use of controllable phase shifters. however, phase quantization errors affect the accuracy of phased array antenna beam pointing badly, which is mainly researched here
其中可控數字移相器的使用，是相控陣天線優越性能實現的關鍵，但由此引入的相位量化誤差，嚴重影響了相控陣天線的波束指向精度。 -
The system is stabilized against external disturbances. this means that the los is really pointing most of the time into a circle around the aim point because of stabilization loop finite bandwidth. the diameter of this circle represents stabilization accuracy
這是因為系統在抑制外來干擾而實現穩定時，由於穩定環有限帶寬的存在，瞄準線實質上是瞄準在目標中心點周圍一定的圓域內，該圓域的直徑反映了系統的穩定精度。 -
Along with the development of the aerospace technology, the next generation of spacecraft will have an unprecedented degree of autonomy and pointing accuracy
隨著航天技術的發展，新一代航天器將具有空前的自主能力和指向精度。 -
To simultaneously solve the problems of the robustness, decoupling control and high accuracy tracking control at the high tracking rate in antenna control system, a new nonlinear antenna tracking - pointing control system for user - satellite was proposed based on a unique nonlinear active disturbance rejection control method
摘要為同時解決用戶衛星天線控制系統的魯棒性、解耦控制和高跟蹤速率下的高精度跟蹤控制等問題，採用非線性自抗擾控制方法，提出了一種新型的用戶衛星天線跟蹤指向控制系統。 -
This paper will deeply and systemically analyze the effect of random error on the location accuracy of the artillery target - search and gun - pointing adjustment radar by using simulation method, present an approach to increase the location accuracy
本文以模擬模擬的方法深入系統地分析了隨機誤差對炮位偵察校射雷達定位精度的影響，並提出了提高定位精度的途徑。 -
After analyzing the existing ambiguity resolution methods the dissertation investigates the baseline rotation method based on the antenna - swap idea, and develops the fixed axis rotation maximum - minimum method ? farmm and the equivalent rotation maximum - minimum method ? ermm applicable for static basement and moving vehicle respectively. the former lowers the demands on rotation device while the latter improves the flexibility of antennae installation. meanwhile the dissertation also brings forward an ambiguity function search method which needs only one single epoch data with the outer aided information, and investigates the accuracy requirements for the assistant pointing information
其次，通過與gps等多星系統定向關鍵技術的對比分析，指出雙星定向模糊度確定的難度;在分析現有模糊度求解方法的基礎之上，研究了基於交換天線思想的轉動基線模糊度確定方法，並提出了適合於靜基座的定軸轉動極大/極小值farmm法，以及適合於地面運動載體的等效轉動極大/極小值ermm法，前者降低了對轉動機構的要求，後者則提高了天線安裝的靈活性;同時，提出了一種藉助外部輔助信息的模糊度函數搜索法實現單歷元雙星定向，並分析了對外部輔助單軸姿態信息的精度要求。 -
The purposes of this technical reform are to raise the measurement accuracy of the miss - targets and to improve the system error of the axis, hence increase the space pointing accuracy of satellites. it can offer a measurement means for high accuracy measurement orbit, forecast and method research on the space targets
本項改造提高了脫靶量的測量精度和減小了軸系的系統偏差，從而提高衛星的空間定位精度，為空間目標高精度測軌預報和方法研究提供了測量手段。 -
The small astronomical satellite has demands on both pointing accuracy and attitude maneuverability, so this thesis modeled the attitude control subsystem based on reaction wheels. under the fine precision pointing mode, a pd control law and a variable structure ( vs ) control law were studied respectively, and the simulation validated that vs control is more effective under fine precision pointing mode. furthermore, the vs controller for rapid large - angle maneuver was also designed
2 ） svom衛星同時對指向精度和姿態機動性有著很高的要求，因此本文建立了基於反作用飛輪的svom衛星姿態控制系統模型，在高精度慣性定向三軸穩定模式下分別設計了pd控制律和變結構控制律，通過模擬驗證了變結構控制對于svom衛星的有效性，並基於變結構控制研究了svom衛星快速大角度機動的方法。 -
The satss is an antenna pointing servo system with ultra - low speed and high accuracy, driven by a rare earth permanent magnet ( repm ) brushless dc torque motor. to reduce torque ripple, the repm brushless dc torque motor has a slotless armature, and uses sinusoidal wave driven technology
衛星天線跟蹤伺服系統為超低速高精度天線指向控制系統，該系統使用稀土永磁式無刷直流力矩電機作為天線的驅動機構，為降低轉矩脈動，電機採用無槽電樞結構設計，並使用正弦波驅動方式。 -
The antenna pointing control accuracy can satisfy the design specification and it is validated to be appropriate and effective. at last, the designed user satellites complex control system is simulated based on xpc target which is used for hardware - in - the - loop simulation
4 .基於xpc實時模擬平臺，充分利用實驗室條件，搭建了用戶星天線樣機在迴路中的半物理模擬實驗，將天線指向控制系統和星體姿態穩定控制系統聯合起來，組成中繼衛星復合控制系統進行近一步的驗證。 -
Next, the characteristics of the user satellites complex control system is that the high accuracy antenna pointing control is realized on the basis of ensuring the high accuracy attitude stabilization control of the satellite body
3 .用戶星復合控制系統的特點是在保證衛星平臺高精度姿態穩定控制的前提下，實現星間鏈路天線的高精度指向控制。
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